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Finding the Fourth Proportional to 500.82, 691.38 and 304.56

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Solution

The fourth proportional to 500.82, 691.38 and 304.56 is: 420.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.82 : 691.38 = 304.56 : x
  2. Step 2: Convert to fraction form
    500.82/691.38 = 304.56/x
  3. Step 3: Cross multiply
    500.82x = 691.38 × 304.56
  4. Step 4: Simplify right side
    500.82x = 210,566.69
  5. Step 5: Solve for x
    x = 210,566.69/500.82
  6. Step 6: Final answer
    x = 420.44

Related Problems

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.